Window control device



Patented May 17, 1949 WINDOW CON TROIF DEVICE Paul A. .Viola.andVihcentViola, Br'idgeport, Comm.

ApplicatiOnOctober-G, 1948, -Serial=N; 53,005

I 6 Claims; 1

This invention relates to awindow-control. de-

vice, and has foran object to provide-a simple and effective devicewhich may beeasily mounted on the edge of a slidable sash toautomatically hold the sash at different heights or different "adjustedpositions, but still will permit ready raising or lowering of the sash.

Another object is to provide a device for per mitting effectiveoperation of the sash and retaining it in different positions withouttheuse of the usual and troublesome sash cord and weights.

With the foregoing and other objects in View, we have devised theconstruction-illustrated:in the accompanying drawing forming a part ofthis specification. It is, however, to be understood the invention isnot limited to the specific details of construction and arrangementshown, but may embody various changes. and modifications within thescope of the invention.

In this drawing:

Fig. 1 is a vertical section through a portion of the window frame andsashshowingone of our improved devices applied thereto;

Fig. 2 is a transverse detailsection onan. en-

larged scale taken substantially on:line2-2 of Fig.1;

Fig. 3 is a vertical longitudinal section of the device removed from thesash, the sectionbeing substantially on line 33 of Fig. 2;

Figs. 4 and 5 are front and side views respectively of the carryingblockfor the friction shoe;

Figs. 6 and 7 are side and end views respectively of the cam blocks, and

Figs. 8 and 9 are top and side views respectively of the spring abutmentdiscs.

A portion of a window frame is indicated at it] having the usual uprightguide channel I l for the edge of the side members of the window sash[2, this sash being guided for vertical sliding movement by the frontand inner guide ribs I3 and [4 respectively. Mounted on the bottom walll5 of this channel is a substantially flat metal strip It. This stripruns the full height of the channel longitudinally thereof and isprovided at its opposite side edges with laterally inclined flanges l1engaging the bottom wall iii of the channel, as shown in Fig. 2, so asto space the substantially flat central portion if the strip from thebottom wall l5 of the channel and provide a somewhat yielding springefiect for this strip. This strip may be mounted by any suitable means,such, for example, as the screws [8.

The transverse edge of one side member of the sash I2 is provided with alongitudinal recess 2 or groovea-l9 'opening through this: edge of thesash. Inthis-groove is .mounted. a support 28 comprising-atubularhousing 2!, the rear walls of which'maybe extended at its opposite endsas shown'at 22 to provide extensions for securing the support in therecess or groove is by any suitable--means, such as the screws 23.vIntermediate the'length of the housing '2! and .inits front wall facingthe'channel II, it is provided with an elongated opening: 24, andmounted in this housing and:in this opening is a supporting block 25.This block is of a substantially rectangular shape, and is-provided atits opposite ends with cam lugs 26 havinginclined cam surfaces 21.Located within-the housing at the opposite ends of this block arecamblocks 28. These springs. 30 pressing on the blocks and shifting.

them toward each other so as to press their in- 1 clined cam surfacesEll-against those at the oppocular discs .or blocks 3! secured intheopposite.

ends of-the tubular housing. 2| by any suitable means, such as thetransverse pins 32. As the. block 25-substantially fills the sideopening, 2Q

and the discstl-rfilland close the opposite ends.

of the tubular housing, the elements within this housing are fullyprotected from the entrance of dirt and moisture.

Mounted on the outer side edge of the block 25 is a friction shoe 33.This may be of any desired length to secure the desired friction, itsouter side surface engaging the substantially fiat portion of the metalstrip [6 for frictional sliding engagement therewith, the shoe beingsecured to the carrying block 25 by any suitable means, such, forexample, as the screws 34. The shoe may also be made of differentmaterials, but it is preferably of hard wood to slide on the metal stripHi. It will thus be seen that the action of the cam blocks 28 under thepressure of the springs 3!] tends to shift the carrier block 25laterally and outwardly, or to the left as viewed in Figs. 1 and 2, topress the shoe 33 against the surface of the strip [6 for frictionalsliding movement thereon. One of these devices may be mounted on eachside edge of the sash, or if preferred, two may be mounted on each sideedge, one near the top and the bottom of the sash, or one only may bemounted in one side edge of the sash as found desirable and depending onthe weight of the sash. The construction can also be reversed so thatthe strip I6 is mounted on the sash while the housing and the shoe 33are mounted in the window frame.

It will be evident from the above this forms a very simple constructionwhich may be easily and quickly mounted in the window frame and sash,and that the shoe is automatically pressed with a uniform pressureagainst the friction strip IS with a uniform sliding frictionalengagment. The strip l6 as indicated above has a certain yieldingresilient action under pressure of the shoe 33, so that the two coact toprovidea smooth frictional sliding action which produces a uniformfrictional engagement throughout the full movement of the sash. Thispermits ready operation of the sash, either in raising or lowering, andwith a uniform action in all positions, and the frictional actionautomatically retains the sash in any position in which it is adjusted.It will function indefinitely. With this device the usual sash cord andweights are eliminated, eliminating the annoyances and difficulties ininstalling these cords and weights as well as those caused by frequentbreaking of the cords.

Having thus set forth the nature of our invention, we claim:

1. A window control device comprising a metal strip to be mounted on thebottom of the sash guide in a window frame and extend longitudinallythereof, a support to be mounted on the sash including a housing, apressure block mounted in the housing, a pair of cam blocks in thehousing having inclined surfaces engaging opposite ends of the firstblock, springs tending to shift the cam blocks against the pressureblock to shift it laterally, and a, pressure shoe carried by thepressure block to slide along the surface of the metal strip.

2. A window control device comprising a substantially fiat metal stripto be mounted on the bottom of the sash guide in a window frame andextending longitudinally thereof, said strip being provided withlongitudinal laterally inclined flanges along its opposite edges toengage the bottom of the guide and space the substantially fiat portionof the strip therefrom, a support to be mounted in the sash, a blockmounted in the support, spring operated cam means tending to force theblock laterally, and a friction shoe carried by the block and pressedagainst the surface of the strip for frictional sliding engagementtherewith.

3. A window control device comprising a support to be mounted on thesash, a pressure block mounted on the support to move laterally, springpressed cam means at the opposite ends of the block tending to shift theblock laterally, and a friction pressure shoe carried by the block.

4. A window control device comprising a support to be mounted on thesash and including a housing provided with an opening in a side wall, ablock mounted in the housing and projecting through said opening, camblocks in the housing at opposite ends of the first block, springstending to shift the cam blocks to press them against the first block,said blocks being provided with cooperating camming faces to shift thefirst block laterally, and a pressure friction shoe carried by saidlatter block.

5. A window control device comprising a support to be mounted on a sashand including a substantially cylindrical housing provided with anopening in a side wall, a supporting block in the housing and extendingthrough said opening, the opposite ends of the block being inclined, camblocks mounted in the housing at opposite ends of the first block andprovided with inclined ends engaging the inclined ends of the firstblock, springs acting on the cam blocks to press them against the firstblock to shift it laterally, and a friction shoe carried by the firstblock.

6. A window control device comprising in combination a window frameincluding a channel guide for the edge of a sash, a sash having its edgeslidable in said guide, a substantially flat metal friction stripmounted on the bottom of said channel and extending longitudinallythereof, said sash being provided with a groove in its side edge, atubular housing mounted in the sash groove and provided with an openingin its side wall facing the channel, a block mounted in the housing andin said opening, cam blocks in the housing provided with cammingsurfaces engaging opposite ends of the first block, springs tending toforce the cam blocks against the first block to shift it outwardly, anda friction shoe carried by the first block and pressedagainst thefriction strip for sliding engagement therewith.

PAUL A. VIOLA. VINCENT VIOLA.

No references cited.

